Update Obligation.md

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Théo Marchal 2024-06-07 17:10:00 +02:00
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@ -26,17 +26,28 @@ Can be used as わけはいかない or わけにはいきません.
> {本当|ほんとう}に飲み会に行く==わけにはいかない==よ。
> There's really no way I can go to the afterwork.
## ずにはいられない
## なくてもい
Means "can't help but do something".
Made with a verb in the negative form (ない) without the ない ending and adding ずにはいられない.
Means "don't have to". Used with a verb in the negative form (ない), appending なくてもいい.
Can also be used as なくていい.
> [!info] Example
> {悲|かな}しいのでアイスクリーム食べ==ずには入れれない==。
> I'm sad so I can't help but eat ice cream.
> 今日はレストランで{手伝|て|つ}わ==なくてもいい==。
> You don't have to help out at the restaurant today (it's okay if you don't help at the restaurant today).
## てからでないと
Means "must first do". The second part becomes possible after the first one.
Used with a verb in て form, with からでないと or からでないければ.
> [!info] Example
> {払|はら}==ってからでないと=={入|はい}るができること。
> You can enter only after paying.
## こと as "should do"
### こと
<div class="usage">
<div class="left">
<p><span class="box">V (dictionary)</span></p>
@ -51,7 +62,16 @@ Means "should do". Mostly used to set rules.
> ここに{車|くるま}を{止|と}めない==こと==です。
> Don't park your car here.
## ことはない
### ことになっている
This form is used to express rules or expectations.
Used with dictionary (る) and negative (ない) form of verbs.
> [!info] Examples
> {指|ゆび}で食べない==ことになっている==。
> You're not supposed to eat with your fingers.
### ことはない
This has two meanings:
* it is not necessary to
@ -63,57 +83,19 @@ Used with a verb in the dictionary form.
> {走|はし}る==ことはない==。まだ{時間|じかん}がある。
> There's no need to run. There's still time.
## ことになっている
## 必ず
This form is used to express rules or expectations.
Used with dictionary (る) and negative (ない) form of verbs.
> [!info] Examples
> {指|ゆび}で食べない==ことになっている==。
> You're not supposed to eat with your fingers.
## Must
### なくちゃ・なきゃ
Only used on casual spoken conversations.
This form is used with the negative form of a verb (ない), and adding なくちゃ and optionally one of the following ending: だめ, いけない, いけません, ならない, なりません.
なくちゃ is the shortened form of なくては.
なきゃ is the shortened form of なければ.
{必|かなら}ず means certainly, definitely. Expresses an obligation.
> [!info] Example
> {歯|は}を{磨|みが}か==なくちゃいけない==
> I must brush my teeth.
> 明日の{授業|じゅ|ぎょう}==必ず==来てください。
> Please be sure to attend tomorrow's class.
### なくては「いけない・ならない」
Also formed with the negative form of a verb.
> [!info] Example
> 今{遅|おそ}いね。{寝|ね}に行か==なくてはいけない==。
> It's late now. I have to go to sleep.
### なければ「いけない・ならない」
Also formed with the negative form of a verb.
> [!info] Example
> {事務所|じむしょ}では{静|しず}かにし==なければならない==。
> You have to be quiet in the office.
### ないといけない
Also formed with the negative form of a verb.
In casual contexts, can be shortened as ないと.
> [!info] Example
> 今日は{勉強|べんきょう}し==ないといけない==。
> I have to study today.
## べき
### べきだ
Means "should do", "must do".
Means "should do", "must do". Compared to the [[Obligation - なければ・ないと]] forms and 必ず, it has a nuance of being less universally logical. It is defined by the speaker's own logic.
Used with verbs.
する can be used as するべき or すべき.
@ -121,64 +103,6 @@ Used with verbs.
> {来週|らいしゅう}{試験|しけん}があるので{勉強|べんきょう}す==べきです==。
> There is an exam next week, so I should study.
## てからでないと
Means "must first do". The second part becomes possible after the first one.
Used with a verb in て form, with からでないと or からでないければ.
> [!info] Example
> {払|はら}==ってからでないと=={入|はい}るができること。
> You can enter only after paying.
🛠🛠🛠🛠
Todo: new notions!
### Comparing いけない and ならない
* ==いけない== is the standardly used form. It implies a subjective view, that it would be better to do something, to avoid negative consequences (eg: brushing one's teeth, eating well, etc).
* ==ならない== is usually more formal or in written form. It implies a is more objective view, something that has to be done because there's no other way (eg: respecting the law, paying taxes, etc).
### Comparing なくては, なければ and ないと
なくては and なければ are generally interchangeable in speech. However:
* ==なくては== is generally used when there is _no penalty_ for not complying.
* ==なければ== is generally used when there _is a penalty_ for not complying.
* ==ないと== is lighter and does not imply that there can or cannot be penalty. Its construction is based on the [[Conditional#と]] particle, and should be based on knowledge or experience.
## Must not
#### 「ちゃ・じゃ」「だめ・いけない・いけません」
Only used on casual spoken conversations. いけません is a bit more formal.
This form is used with a V-て, depending on the ending:
* with て, ちゃ is used.
* with で, じゃ is used.
> [!info] Examples
> その{花|はな}を食べ==ちゃだめ==。
> Don't eat those flowers.
>
> {花瓶|か|びん}の水を{飲|の}ん==じゃいけない==。
> Don't drink the water of the flower vase.
### てはいけない
Used in a more formal or written manner. Used with a V-て.
> [!info] Example
> {鉄道|てつ|どう}に{歩|ある}い==てはいけません==。
> Do not walk on the railroad.
### なくてもいい
Means "don't have to". Used with a verb in the negative form (ない), appending なくてもいい.
Can also be used as なくていい.
> [!info] Example
> 今日はレストランで{手伝|て|つ}わ==なくてもいい==。
> You don't have to help out at the restaurant today (it's okay if you don't help at the restaurant today).
### べきではない・べきじゃない
The contrary of べきだ is べきではない・べきじゃない.
@ -187,45 +111,23 @@ The contrary of べきだ is べきではない・べきじゃない.
> {泥|どろ}を食べる==べきではない==。
> You should not eat mud.
## ても構わない
## はずだ・はずがない
<div class="usage">
<div class="left">
<p><span class="box">V (て)</span></p>
<p><span class="box">い-Adj <strike></strike> くて</span></p>
<p><span class="box">な-Adj + </span></p>
<p><span class="box">N + </span></p>
<p><span class="box">V</span></p>
<p><span class="box">い-Adj</span></p>
<p><span class="box">な-Adj + </span></p>
<p><span class="box">N + </span></p>
</div>
<p class="right">+ もかまわない・もかまいません</p>
<p class="right">+ はずだ ・ はずがない</p>
</div>
Means "it doesn't matter if", "I don't mind".
はずだ means "it must/should be", while はずがない means "it cannot be". Has a nuance of being sure that it is something possible (or impossible).
> [!info] Example
> ここで{座|すわ}==っても構いません==か
> Would it be okay if I sit here?
> [!info] Examples
> {彼|かれ}は今日来る==はずだ==
> He should be coming today.
>
> ==かまわない==よ。
> I don't mind.
# TODO
## ないと
must do; unless/if you don't ~
https://jlptsensei.com/learn-japanese-grammar/%e3%81%aa%e3%81%84%e3%81%a8-naito-meaning/
https://bunpro.jp/grammar_points/%E3%81%AA%E3%81%84%E3%81%A8
> そんあ==はずがありません==。
> This cannot be true.